What Is Immunotherapy?
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Overview
The human immune system is the body’s natural defense mechanism against infections, abnormal cells, and cancer development. It is made up of white blood cells, lymph nodes, the spleen, and other specialized structures. These immune components detect and destroy harmful invaders or faulty cells through a coordinated network of signals, enzymes, and defense responses.
Cancer cells, however, are highly adaptive. They can evade immune detection by sending inhibitory signals or by creating a protective environment around tumors. When the immune system is weakened or suppressed by these signals, cancer growth may progress.
To address this, medical science has developed immunotherapy — a modern treatment that enhances the immune system’s ability to fight cancer. At MedicalPoint Hospital, immunotherapy is an important part of our comprehensive cancer care, often offered as a standard treatment option for specific cancer types.
What Is Immunotherapy?
Immunotherapy is a type of cancer treatment designed to boost or restore the body’s natural defense system to recognize and eliminate cancer cells more effectively. Unlike chemotherapy, which directly targets and kills tumor cells, immunotherapy works by activating the patient’s immune system to mount a stronger and more precise attack against cancer.
This approach can be used as:
- A stand-alone treatment for eligible patients.
- A combined therapy, alongside chemotherapy, radiotherapy, or targeted treatments, for enhanced results.
Different types of immunotherapies are available, including immune checkpoint inhibitors, monoclonal antibodies, cancer vaccines, and adoptive cell therapies. Although they function in different ways, all share the same goal: to improve the immune system’s ability to control and eliminate cancer.
Which Types of Cancer Can Be Treated With Immunotherapy?
Clinical research has shown that immunotherapy is effective against a wide range of cancers. At MedicalPoint Hospital, it may be recommended for patients diagnosed with:
- Breast cancer
- Bladder cancer
- Colorectal cancer
- Cervical cancer
- Esophageal (food pipe) cancer
- Head and neck cancers
- Liver cancer
- Lung cancer
- Lymphoma
- Leukemia (blood cancer)
- Skin cancers (such as melanoma)
- Soft tissue sarcoma
- Stomach cancer
- Multiple myeloma
- Kidney cancer
- Prostate cancer
Ongoing clinical studies are expanding the potential uses of immunotherapy, and new treatment agents are being discovered every year.
Who Is Eligible for Immunotherapy?
Not all patients are automatically suitable for immunotherapy. Determining eligibility requires specific biomarker testing and diagnostic evaluations.
Factors considered include:
- The type and stage of cancer
- Molecular and genetic markers of the tumor
- The patient’s overall health, medical history, and laboratory test results
For some cancers, immunotherapy is considered a first-line treatment. In other cases, it may be recommended after other therapies or as part of a combination plan. At MedicalPoint Hospital, our oncology specialists carefully assess each case to design a personalized treatment pathway.
How Is Immunotherapy Administered?
Most immunotherapy treatments are given as an intravenous (IV) infusion into the bloodstream.
- Treatment cycles: Immunotherapy is usually delivered in cycles (weekly, biweekly, or monthly), followed by rest periods that allow the body to recover.
- Duration of sessions: Each infusion may last between 30 to 90 minutes.
- Course of treatment: The total treatment length can vary. Some patients may continue immunotherapy for months or even over a year, depending on response and tolerance.
How Long Does Immunotherapy Last?
The duration of immunotherapy depends on the individual patient response and the type of cancer being treated.
- Treatments are generally repeated every 2–3 weeks.
- Some patients experience improvement within a few cycles, while others may require longer treatment to achieve significant results.
In many cases, immunotherapy can continue for one year or more if the patient benefits and tolerates the therapy well.
How Does Immunotherapy Differ From Chemotherapy?
Chemotherapy and immunotherapy are both commonly used cancer treatments, but they work in very different ways:
- Mode of action:
- Chemotherapy directly attacks rapidly dividing cancer cells but can also damage healthy cells.
- Immunotherapy activates the immune system to detect and destroy cancer cells.
- Treatment coverage:
- Chemotherapy is a standard treatment for many cancers.
- Immunotherapy is not suitable for all cancers, but is highly effective in select cases.
- Side effects:
- Chemotherapy may cause side effects like nausea, hair loss, and lowered immunity due to its impact on both healthy and cancerous cells.
- Immunotherapy side effects are generally linked to overactivation of the immune system, leading to inflammation or autoimmune-like reactions.
- Long-term effects:
- Chemotherapy does not provide memory to the immune system.
- Immunotherapy can help immune cells “remember” cancer, offering long-lasting protection against recurrence.
- Treatment duration:
- Chemotherapy is usually shorter in duration.
- Immunotherapy often requires longer treatment cycles.
At MedicalPoint Hospital, oncologists may recommend a tailored approach, combining both therapies when appropriate.
Conclusion
Immunotherapy represents one of the most significant breakthroughs in modern oncology, empowering the body’s immune system to recognize and fight cancer more effectively. While it is not suitable for all patients, careful evaluation of biomarkers and cancer type allows doctors to identify those who can benefit the most.
At MedicalPoint Hospital, our oncology specialists combine advanced diagnostics, personalized treatment planning, and cutting-edge immunotherapy options to give patients the best possible outcomes. Whether used alone or alongside chemotherapy and radiotherapy, immunotherapy continues to improve survival rates and quality of life for patients worldwide.
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